math
posted by jordan on .
You want to explain to your friend that your bank’s interest rate has gone down from 1.2% to 0.3%. Which sentence below has the correct meaning?
A)My interest rate has decreased 25%.
B)My interest rate has decreased 0.9 percentage points.
C)My interest rate is 0.9% of what it was before.
D)My interest rate has decreased 0.9%.

1.2%  .3% = ?%